Ethernet settings by command line

[cioralut]

I need to configure ethernet connection (DHCP enable/disable, IP Address, subnet mask, default gateway, domain name) by linux command line or directly to file.
I managed to set the IP (ifconfig eth0 192.168.1.10) and subnet mask (ifconfig eth0 netmask 255.255.255.0) but I don't know how to set Gateway, Dns and enable/disable DHCP.
Is there a file with eth0 settings? In linux there is /etc/networking/interfaces file but in ODROID-C2 I haven't find it
Can you help me? Thanks

Best regards

Daniele

[rpcameron]

Try man ip at the command line.ip is the interface to the iproute2 package; you can use that to manage your interfaces.

(Edit: just realized this was the Android subforum, so not sure if that's going to work. ...)

[cioralut]

Infact. The command man ip on "Android" linux shell doesn't work ....

[codewalker]

$ su
# getprop | grep eth
# ifconfig eth0 xxx.xxx.xxx.xxx up
# route add default gw xxx.xxx.xxx.xxx dev eth0
# setprop net.dns1 xxx.xxx.xxx.xxx

[cioralut]

Thanks for your help but this command didn't return errors but unfortunately didn't change any parameters (IP, DNS and GATEWAY remain the same as before)

[codewalker]

- dhcp diasable
# ifconfig eth0 down
# stop dhcpcd_eth0

- dhcp enable
ifconfig eth0 up

dns/subnet mast/gateway
getprop | grep dns[subnet|gateway]
setprop xxx xxx.xxx.xxx.xxx

[cioralut]

Hi codewalker.
I know the commands to disable/enable eth0...
The other commands "getprop, setprop ..." don't work. Do you work with ODROID-C2? If yes please write me the commands for:

- ENABLE IP FROM DHCP SERVER
- ENABLE IP STATIC (ifconfig eth0 192.168.1.10 doesn't work. After a reboot the IP is set again to the previous value: 192.168.1.64)
- SET SUBNETMASK (ifconfig eth0 netmask 255.255.0.0 doesn't work. After a reboot the SUBNETMASK is set again to the previous value: 255.255.255.0 )
- SET GATEWAY (example 192.168.1.1)
- SET PRIMARY DNS (example 192.168.1.1)

Thanks

[odroid]

Does it work if you don't reboot?

[cioralut]

Excuse but why do not you try?

Code: Select all

shell@odroidc2:/ $ su
[  183.743361@1] ttyS0 use xtal 24000000 change 115200 to 115200
root@odroidc2:/ # ifconfig eth0
eth0: ip 192.168.5.10 mask 255.255.0.0 flags [up broadcast running multicast]
root@odroidc2:/ # ifconfig eth0 192.168.5.12 up
root@odroidc2:/ # ifconfig eth0
eth0: ip 192.168.5.12 mask 255.255.255.0 flags [up broadcast running multicast]
root@odroidc2:/ #
130|root@odroidc2:/ # ifconfig eth0 netmask 255.255.0.0
root@odroidc2:/ # ifconfig eth0
eth0: ip 192.168.5.12 mask 255.255.0.0 flags [up broadcast running multicast]
root@odroidc2:/ #
130|root@odroidc2:/ # ifconfig eth0 down
root@odroidc2:/ # ifconfig eth0 up
[  377.933773@2] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
root@odroidc2:/ # [  381.920538@2] libphy: stmmac-0:00 - Link is Up - 1000/Full
[  381.921297@2] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

root@odroidc2:/ # ifconfig eth0
eth0: ip 192.168.5.10 mask 255.255.0.0 flags [up broadcast running multicast]
root@odroidc2:/ #


It seems that the command

Code: Select all

ifconfig eth0 192.168.5.12 up

has been successful but it really is not so.
At PING command (ping 192.168.5.12) the devices not responde.
If I try to DOWN - UP eth0 (or reboot device) the IP is remained 192.168.5.10.

[odroid]

Did you stop the DHCP daemon first?

[cioralut]

yes

[codewalker]

It is impossible to use linux command line.
Try settings -> Wireless & networks -> More -> Ethernet -> Static IP Settings.

[cioralut]

So with ODROID-C2 the ONLY WAY to settings ethernet is to use android settings interface?

[odroid]

Yes, probably.
We could set the Ethernet configuration on the command line on Android 4.4 or old version with other platforms.
But we just found that Android 5.1 or newer version network settings are tightly coupled with internal network framework.
So it seems to be very hard use the command line.

[rooted]

Using ndc is the proper way to set in Android, at least I think it is.

Code: Select all

ndc resolver setnetdns netId domains dns1 dns2


[cioralut]

Hi rotted. Sorry but i don't know this command.
Could you write me some examples?

1) ENABLE IP FROM DHCP SERVER
2) ENABLE IP STATIC (set 192.168.1.10)
3) SET SUBNETMASK (set 255.255.0.0)
4) SET GATEWAY (set 192.168.1.1)
5) SET PRIMARY DNS (set 192.168.1.1)

Thanks
Daniele